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ok i decided to tap into the light switch to power my gages.i have to say taking off that switch was REALLY tricky but i eventually got it out.ok heres my question.when tapping into the light switch (my 12v source) do i tie up my 2 gages (white wires) and just splice it into the 12v source?or do i need to find a separate 12v source for EACH gage?

i was thinking if i tied them both together (white wires) and spliced it in to the 12v source, they would be kind of dim since the voltage is being split between the two?im i wrong?how did u guys install them?
 

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I tied my gauges together then soldered them into the 12V dimmer switch like you stated..works perfect.
 
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